books.google.be - Using simple examples from everyday life, an Einstein scholar offers entertaining, nontechnical demonstrations of the meaning of relativity theory. Starting with the geometrical and cosmological ideas of the ancient Greeks, he traces the theory's development from its basis in work by Kepler, Galileo,...http://books.google.be/books/about/Relativity_and_its_roots.html?hl=nl&id=JokgnS1JtmMC&utm_source=gb-gplus-shareRelativity and its roots
